In this short and simple article, we will see how to assign datepicker to runtime textboxes or dynamic textboxes using jQuery in ASP.NET.
Here is code to create three textboxes dynamically (programmatically)
Code behind:

If your content page is wrapped in an ASP.NET AJAX UpdatePanel, then you cannot use the ClientScript.RegisterStartupScript to call a JavaScript function during a partial-page postback. Instead, use the ScriptManager.RegisterStartupScript() method.
protected void Page_Load(object sender, EventArgs e)
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append(@”“);